HBM MP85A - Page 122

FAQs: Frequently asked questions (MP85A and PME Assistant)
122 A0293_06_E00_03 HBM: public MP85A
Only these values also need to be checked in relation to the range window, the
tolerance band and the envelope curve or tolerance window. The alarm win
dow, start, stop and end conditions and the external inputs are immediately
checked and analyzed in the scale determined by the data rate. In transducers
with SSI interface only, the MP85A always reads out the measured value 1200
times a second, by sending a transfer signal to the transducer.
The advantage of this is measurement with a high internal data rate and excel
lent time resolution, as only the relevant values require (time-consuming) fur
ther processing. The MP85A can record 4000 values in total for further pro
cessing. If the measurement is not finished by then, it is stopped and the error
message “Buffer overflow” is displayed.
As a test, perform a sample measurement “manually” to see the current resolu
tion. The measurement points used for analysis are also displayed in the graph
(Graph  Graphic settings  Curve with connected points). The number
of measurement points actually used is shown on the right-hand side right at
the top of the window (toolbar) after measurement. This enables you to decide
whether the number of plotted measurement points is high enough, i.e. if reso
lution is sufficiently high for analysis. Also see the examples below.
Tip
Alternatively, you can click on the Automatically adapt alarm and range win
dows in the Alarm window tab. In addition, the Dx and Dy of data reduction is
set to practical values for these ranges. Moreover, the alarm window is set to
the measuring range of the transducers, enlarged by 15% in all directions, and
the range window to a range enlarged by 10%.
The number of measured values in the x-direction shown in the diagram below
is insufficient for achieving the precise course of the curve, if this is required.
Here, you must reduce the values for the differences in the x or y-direction
entered in the Control settings tab.